Lg Electronics 25kW User Manual

The standby generator may be equipped with one of 
the following fuel systems:

•  Natural gas fuel system
•  Propane vapor (PV) fuel system
The Manual Drawing Listing that is affixed to the 
unit includes the “Identification Code,” which may be 
used to identify the type of fuel system installed on 
the unit.

Recommended fuels should have a Btu content of at 
least 1,000 Btus per cubic foot for natural gas; or at 
least 2,520 Btus per cubic foot for LP gas. Ask the 
fuel supplier for the Btu content of the fuel.

Required fuel pressure for natural gas is 5 inches 
to 14 inches water column (0.18 to 0.5 psi); and 
for liquid propane, 5 inches to 14 inches of water 
column (0.18 to 0.5 psi).

NOTE:

Any piping used to connect the generator to the 
fuel supply should be of adequate size to ensure 
the fuel pressure NEVER drops below five inches 
water column for natural gas or 5 inches water 
column for propane vapor for all load ranges.

NOTE:

It is the responsibility of the installer to make sure 
that only the correct recommended fuel is sup-
plied to the generator fuel system. Thereafter, the 
owner/operator must make certain that only the 
proper fuel is supplied.

Natural gas is supplied in its vapor state. In most 
cases, the gas distribution company provides piping 
from the main gas distribution line to the standby 
generator site. The following information applies to 
natural gas fuel systems.

•  Gas pressure in a building is usually regulated by 

national, state and local codes.

• To reduce gas pressure